What is an ensemble model that needs you to look at out of bag error?1 pointStackingLogistic Regression.Out of Bag RegressionRandom Forest

The ensemble model that requires you to look at the out of bag error is the Random Forest.

Here's a step-by-step explanation:

1. An ensemble model is a predictive model that combines the predictions from two or more other models. It is often used to reduce the risk of overfitting and improve the accuracy of predictions.

2. The out of bag error is a method of measuring the prediction error of random forests, boosted decision trees, and other machine learning models when they are part of an ensemble. It is calculated by averaging the prediction error for each observation in the training set, using only the trees that did not have that observation in their bootstrap sample.

3. The Random Forest model is an ensemble learning method that operates by constructing multiple decision trees at training time and outputting the class that is the mode of the classes (classification) or mean prediction (regression) of the individual trees.

4. During the construction of these trees, about one-third of the data is not used (this is the out of bag data). After the forest is created, this out of bag data can be used to get an unbiased estimate of the model error, as it was not used in the construction of the forest.

5. Therefore, the Random Forest model is the one that requires you to look at the out of bag error.